Alchemist's notebook

Sir Isaac Newton, the founder of modern physics, is best known for his theory of universal gravitation. But in his later years he dabbled in alchemy, an ancient tradition which was still at that time – some 300 years ago – believed to hold the key to an elixir of youth and an ability to turn common metals into gold. There is a story that many of his notes and manuscripts on alchemy were lost in a fire that started when his dog, named Diamond, knocked over a candle.